Answer:
40 girls
Step-by-step explanation:
Set up a proportion where x is the number of girls in band class:
 =
 = 
Cross multiply and solve for x:
3x = 120
x = 40
So, there were 40 girls in band class.
 
        
                    
             
        
        
        
Answer:
are there multiple choices?
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
x = 3
Step-by-step explanation:
x + 4 = 7 ( isolate x by subtracting 4 from both sides )
x = 3
 
        
                    
             
        
        
        
Answer:
9 smoothie's
Step-by-step explanation:
Given Isabelle's recipe recquire 2/3 cup of strawberry for making one smoothie.
Given 6 cups of strawberry is available .
Let the number of smoothie's made by her is x


on cross multiplication we get 

x = 9.
Therefore the total number of smoothies made are 9 
 
        
             
        
        
        
2 over 3 is 14 over 21 simplified, dividing both numbers by 7.